Acidity of biomass fast pyrolysis bio-oils

Anja Oasmaa (Corresponding Author), Douglas C. Elliott, Jaana Korhonen

Research output: Contribution to journalArticleScientificpeer-review

142 Citations (Scopus)

Abstract

The use of the total acid number (TAN) method for measuring the acidity of biomass fast pyrolysis bio-oil was evaluated. Suggestions for carrying out the analysis have been made. The TAN method by American Society for Testing and Materials (ASTM) D664 or D3339 can be used for measuring the acidity of fast pyrolysis bio-oils and their hydrotreating products. The main difference between the methods is that ASTM D664 is specified for higher TAN values than ASTM D3339. Special focus should be placed on the interpretation of the TAN curves because they differ significantly from those of mineral oils. The curve for bio-oils is so gentle that the automatic detection may not observe the end point properly, and derivatization should be used. The acidity of fast pyrolysis bio-oils is mainly derived (60-70%) from volatile acids. Other groups of compounds in fast pyrolysis bio-oils that influence acidity include phenolics, fatty and resin acids, and hydroxy acids.

Original languageEnglish
Pages (from-to)6548-6554
Number of pages7
JournalEnergy & Fuels
Volume24
Issue number12
DOIs
Publication statusPublished - 16 Dec 2010
MoE publication typeA1 Journal article-refereed

Fingerprint

Acidity
Oils
Biomass
Pyrolysis
Acids
Testing
Mineral Oil
Hydroxy Acids
Mineral oils
Resins

Cite this

Oasmaa, Anja ; Elliott, Douglas C. ; Korhonen, Jaana. / Acidity of biomass fast pyrolysis bio-oils. In: Energy & Fuels. 2010 ; Vol. 24, No. 12. pp. 6548-6554.
@article{9499163ae3894dd7b920d2982c7e2e75,
title = "Acidity of biomass fast pyrolysis bio-oils",
abstract = "The use of the total acid number (TAN) method for measuring the acidity of biomass fast pyrolysis bio-oil was evaluated. Suggestions for carrying out the analysis have been made. The TAN method by American Society for Testing and Materials (ASTM) D664 or D3339 can be used for measuring the acidity of fast pyrolysis bio-oils and their hydrotreating products. The main difference between the methods is that ASTM D664 is specified for higher TAN values than ASTM D3339. Special focus should be placed on the interpretation of the TAN curves because they differ significantly from those of mineral oils. The curve for bio-oils is so gentle that the automatic detection may not observe the end point properly, and derivatization should be used. The acidity of fast pyrolysis bio-oils is mainly derived (60-70{\%}) from volatile acids. Other groups of compounds in fast pyrolysis bio-oils that influence acidity include phenolics, fatty and resin acids, and hydroxy acids.",
author = "Anja Oasmaa and Elliott, {Douglas C.} and Jaana Korhonen",
year = "2010",
month = "12",
day = "16",
doi = "10.1021/ef100935r",
language = "English",
volume = "24",
pages = "6548--6554",
journal = "Energy & Fuels",
issn = "0887-0624",
publisher = "American Chemical Society",
number = "12",

}

Acidity of biomass fast pyrolysis bio-oils. / Oasmaa, Anja (Corresponding Author); Elliott, Douglas C.; Korhonen, Jaana.

In: Energy & Fuels, Vol. 24, No. 12, 16.12.2010, p. 6548-6554.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Acidity of biomass fast pyrolysis bio-oils

AU - Oasmaa, Anja

AU - Elliott, Douglas C.

AU - Korhonen, Jaana

PY - 2010/12/16

Y1 - 2010/12/16

N2 - The use of the total acid number (TAN) method for measuring the acidity of biomass fast pyrolysis bio-oil was evaluated. Suggestions for carrying out the analysis have been made. The TAN method by American Society for Testing and Materials (ASTM) D664 or D3339 can be used for measuring the acidity of fast pyrolysis bio-oils and their hydrotreating products. The main difference between the methods is that ASTM D664 is specified for higher TAN values than ASTM D3339. Special focus should be placed on the interpretation of the TAN curves because they differ significantly from those of mineral oils. The curve for bio-oils is so gentle that the automatic detection may not observe the end point properly, and derivatization should be used. The acidity of fast pyrolysis bio-oils is mainly derived (60-70%) from volatile acids. Other groups of compounds in fast pyrolysis bio-oils that influence acidity include phenolics, fatty and resin acids, and hydroxy acids.

AB - The use of the total acid number (TAN) method for measuring the acidity of biomass fast pyrolysis bio-oil was evaluated. Suggestions for carrying out the analysis have been made. The TAN method by American Society for Testing and Materials (ASTM) D664 or D3339 can be used for measuring the acidity of fast pyrolysis bio-oils and their hydrotreating products. The main difference between the methods is that ASTM D664 is specified for higher TAN values than ASTM D3339. Special focus should be placed on the interpretation of the TAN curves because they differ significantly from those of mineral oils. The curve for bio-oils is so gentle that the automatic detection may not observe the end point properly, and derivatization should be used. The acidity of fast pyrolysis bio-oils is mainly derived (60-70%) from volatile acids. Other groups of compounds in fast pyrolysis bio-oils that influence acidity include phenolics, fatty and resin acids, and hydroxy acids.

UR - http://www.scopus.com/inward/record.url?scp=78650343828&partnerID=8YFLogxK

U2 - 10.1021/ef100935r

DO - 10.1021/ef100935r

M3 - Article

VL - 24

SP - 6548

EP - 6554

JO - Energy & Fuels

JF - Energy & Fuels

SN - 0887-0624

IS - 12

ER -